./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/bench-exp2x3.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/bench-exp2x3.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/bench-exp2x3.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/bench-exp2x3.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-?-80b1b13-m [2024-01-31 16:45:57,015 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:45:57,090 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:45:57,095 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:45:57,096 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:45:57,121 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:45:57,122 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:45:57,123 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:45:57,123 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:45:57,127 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:45:57,127 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:45:57,127 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:45:57,128 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:45:57,129 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:45:57,130 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:45:57,130 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:45:57,130 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:45:57,130 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:45:57,131 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:45:57,131 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:45:57,131 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:45:57,131 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:45:57,132 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:45:57,132 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:45:57,132 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:45:57,132 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:45:57,133 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:45:57,133 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:45:57,134 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:45:57,134 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:45:57,135 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:45:57,135 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:45:57,135 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:45:57,135 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:45:57,135 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:45:57,136 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:45:57,136 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:45:57,136 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:45:57,136 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:45:57,136 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:45:57,137 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:45:57,137 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:45:57,137 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:45:57,138 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:45:57,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:45:57,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:45:57,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:45:57,414 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:45:57,415 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:45:57,416 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp2x3.wvr.c [2024-01-31 16:45:58,642 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:45:58,839 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:45:58,840 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp2x3.wvr.c [2024-01-31 16:45:58,848 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f34af5916/a96a572d1c73412b9ee8f90f1b885116/FLAG6482f55cf [2024-01-31 16:45:58,862 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f34af5916/a96a572d1c73412b9ee8f90f1b885116 [2024-01-31 16:45:58,865 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:45:58,868 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:45:58,869 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/bench-exp2x3.wvr.yml/witness.yml [2024-01-31 16:45:58,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:45:58,952 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:45:58,952 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:45:58,953 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:45:58,956 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:45:58,957 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:45:58" (1/2) ... [2024-01-31 16:45:58,958 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2975be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:45:58, skipping insertion in model container [2024-01-31 16:45:58,958 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:45:58" (1/2) ... [2024-01-31 16:45:58,959 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7645c19a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:45:58, skipping insertion in model container [2024-01-31 16:45:58,959 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:45:58" (2/2) ... [2024-01-31 16:45:58,959 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2975be and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:58, skipping insertion in model container [2024-01-31 16:45:58,959 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:45:58" (2/2) ... [2024-01-31 16:45:58,960 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:45:58,994 INFO L93 nessWitnessExtractor]: Witness did not contain any usable entries. [2024-01-31 16:45:59,019 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:45:59,173 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp2x3.wvr.c[2289,2302] [2024-01-31 16:45:59,177 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:45:59,187 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 16:45:59,216 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp2x3.wvr.c[2289,2302] [2024-01-31 16:45:59,217 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:45:59,229 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:45:59,229 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:59 WrapperNode [2024-01-31 16:45:59,229 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:45:59,230 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:45:59,230 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:45:59,230 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:45:59,236 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:59" (1/1) ... [2024-01-31 16:45:59,244 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:59" (1/1) ... [2024-01-31 16:45:59,266 INFO L138 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2024-01-31 16:45:59,268 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:45:59,269 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:45:59,269 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:45:59,269 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:45:59,277 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:59" (1/1) ... [2024-01-31 16:45:59,278 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:59" (1/1) ... [2024-01-31 16:45:59,279 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:59" (1/1) ... [2024-01-31 16:45:59,295 INFO L175 MemorySlicer]: Split 10 memory accesses to 5 slices as follows [2, 2, 2, 2, 2]. 20 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-01-31 16:45:59,295 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:59" (1/1) ... [2024-01-31 16:45:59,295 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:59" (1/1) ... [2024-01-31 16:45:59,301 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:59" (1/1) ... [2024-01-31 16:45:59,305 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:59" (1/1) ... [2024-01-31 16:45:59,307 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:59" (1/1) ... [2024-01-31 16:45:59,309 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:59" (1/1) ... [2024-01-31 16:45:59,312 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:45:59,313 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:45:59,313 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:45:59,313 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:45:59,314 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:59" (1/1) ... [2024-01-31 16:45:59,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:45:59,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:45:59,369 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-31 16:45:59,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-31 16:45:59,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:45:59,401 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 16:45:59,401 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 16:45:59,401 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 16:45:59,401 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 16:45:59,402 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-31 16:45:59,402 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-31 16:45:59,402 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-31 16:45:59,402 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-31 16:45:59,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:45:59,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:45:59,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:45:59,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 16:45:59,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 16:45:59,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:45:59,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:45:59,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:45:59,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:45:59,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 16:45:59,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 16:45:59,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:45:59,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:45:59,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 16:45:59,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 16:45:59,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 16:45:59,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 16:45:59,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-31 16:45:59,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:45:59,406 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:45:59,508 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:45:59,509 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:45:59,792 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:45:59,792 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:45:59,999 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:46:00,000 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-01-31 16:46:00,011 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:46:00 BoogieIcfgContainer [2024-01-31 16:46:00,012 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:46:00,015 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:46:00,015 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:46:00,018 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:46:00,018 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:45:58" (1/4) ... [2024-01-31 16:46:00,019 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d3383d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:46:00, skipping insertion in model container [2024-01-31 16:46:00,019 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:45:58" (2/4) ... [2024-01-31 16:46:00,019 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d3383d2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:46:00, skipping insertion in model container [2024-01-31 16:46:00,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:59" (3/4) ... [2024-01-31 16:46:00,020 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d3383d2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:46:00, skipping insertion in model container [2024-01-31 16:46:00,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:46:00" (4/4) ... [2024-01-31 16:46:00,022 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp2x3.wvr.c [2024-01-31 16:46:00,035 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:46:00,036 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-31 16:46:00,036 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:46:00,089 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-01-31 16:46:00,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 35 transitions, 98 flow [2024-01-31 16:46:00,155 INFO L124 PetriNetUnfolderBase]: 4/31 cut-off events. [2024-01-31 16:46:00,156 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-31 16:46:00,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 31 events. 4/31 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2024-01-31 16:46:00,159 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 35 transitions, 98 flow [2024-01-31 16:46:00,168 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 30 transitions, 84 flow [2024-01-31 16:46:00,176 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:46:00,182 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@116d2c9d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:46:00,182 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-01-31 16:46:00,189 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:46:00,190 INFO L124 PetriNetUnfolderBase]: 4/29 cut-off events. [2024-01-31 16:46:00,190 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-31 16:46:00,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:00,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:00,191 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:46:00,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:00,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1037175478, now seen corresponding path program 1 times [2024-01-31 16:46:00,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:00,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081860282] [2024-01-31 16:46:00,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:00,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:00,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:00,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:00,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:00,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081860282] [2024-01-31 16:46:00,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081860282] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:00,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:00,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:46:00,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622575795] [2024-01-31 16:46:00,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:00,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:46:00,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:00,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:46:00,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:46:00,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-01-31 16:46:00,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 30 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:00,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:00,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-01-31 16:46:00,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:01,211 INFO L124 PetriNetUnfolderBase]: 1537/1955 cut-off events. [2024-01-31 16:46:01,212 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2024-01-31 16:46:01,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4057 conditions, 1955 events. 1537/1955 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6388 event pairs, 141 based on Foata normal form. 1/1134 useless extension candidates. Maximal degree in co-relation 3091. Up to 1733 conditions per place. [2024-01-31 16:46:01,228 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 41 selfloop transitions, 5 changer transitions 1/52 dead transitions. [2024-01-31 16:46:01,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 52 transitions, 243 flow [2024-01-31 16:46:01,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:46:01,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:46:01,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2024-01-31 16:46:01,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2024-01-31 16:46:01,244 INFO L175 Difference]: Start difference. First operand has 39 places, 30 transitions, 84 flow. Second operand 3 states and 75 transitions. [2024-01-31 16:46:01,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 52 transitions, 243 flow [2024-01-31 16:46:01,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 52 transitions, 213 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-31 16:46:01,258 INFO L231 Difference]: Finished difference. Result has 34 places, 34 transitions, 101 flow [2024-01-31 16:46:01,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=34, PETRI_TRANSITIONS=34} [2024-01-31 16:46:01,265 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -5 predicate places. [2024-01-31 16:46:01,266 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 34 transitions, 101 flow [2024-01-31 16:46:01,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:01,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:01,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:01,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:46:01,268 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:46:01,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:01,271 INFO L85 PathProgramCache]: Analyzing trace with hash 442976563, now seen corresponding path program 1 times [2024-01-31 16:46:01,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:01,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749122296] [2024-01-31 16:46:01,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:01,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:01,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:01,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:01,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:01,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749122296] [2024-01-31 16:46:01,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749122296] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:01,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:01,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:46:01,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956303228] [2024-01-31 16:46:01,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:01,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:46:01,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:01,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:46:01,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:46:01,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-01-31 16:46:01,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 34 transitions, 101 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:01,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:01,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-01-31 16:46:01,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:01,744 INFO L124 PetriNetUnfolderBase]: 1843/2368 cut-off events. [2024-01-31 16:46:01,744 INFO L125 PetriNetUnfolderBase]: For 579/579 co-relation queries the response was YES. [2024-01-31 16:46:01,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5874 conditions, 2368 events. 1843/2368 cut-off events. For 579/579 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 8349 event pairs, 139 based on Foata normal form. 34/2396 useless extension candidates. Maximal degree in co-relation 1448. Up to 967 conditions per place. [2024-01-31 16:46:01,759 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 72 selfloop transitions, 10 changer transitions 0/87 dead transitions. [2024-01-31 16:46:01,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 87 transitions, 415 flow [2024-01-31 16:46:01,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:46:01,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:46:01,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-01-31 16:46:01,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6914285714285714 [2024-01-31 16:46:01,766 INFO L175 Difference]: Start difference. First operand has 34 places, 34 transitions, 101 flow. Second operand 5 states and 121 transitions. [2024-01-31 16:46:01,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 87 transitions, 415 flow [2024-01-31 16:46:01,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 87 transitions, 407 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:46:01,773 INFO L231 Difference]: Finished difference. Result has 39 places, 41 transitions, 161 flow [2024-01-31 16:46:01,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=161, PETRI_PLACES=39, PETRI_TRANSITIONS=41} [2024-01-31 16:46:01,774 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 0 predicate places. [2024-01-31 16:46:01,774 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 41 transitions, 161 flow [2024-01-31 16:46:01,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:01,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:01,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:01,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:46:01,775 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:46:01,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:01,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1961728037, now seen corresponding path program 1 times [2024-01-31 16:46:01,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:01,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141559421] [2024-01-31 16:46:01,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:01,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:01,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:01,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:01,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:01,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141559421] [2024-01-31 16:46:01,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141559421] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:01,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:01,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:46:01,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754932152] [2024-01-31 16:46:01,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:01,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:46:01,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:01,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:46:01,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:46:01,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-01-31 16:46:01,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 41 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:01,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:01,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-01-31 16:46:01,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:02,197 INFO L124 PetriNetUnfolderBase]: 2211/2949 cut-off events. [2024-01-31 16:46:02,197 INFO L125 PetriNetUnfolderBase]: For 3566/3566 co-relation queries the response was YES. [2024-01-31 16:46:02,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8999 conditions, 2949 events. 2211/2949 cut-off events. For 3566/3566 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 11970 event pairs, 330 based on Foata normal form. 80/3001 useless extension candidates. Maximal degree in co-relation 3490. Up to 1265 conditions per place. [2024-01-31 16:46:02,215 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 90 selfloop transitions, 8 changer transitions 0/103 dead transitions. [2024-01-31 16:46:02,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 103 transitions, 615 flow [2024-01-31 16:46:02,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:46:02,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:46:02,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-01-31 16:46:02,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.68 [2024-01-31 16:46:02,219 INFO L175 Difference]: Start difference. First operand has 39 places, 41 transitions, 161 flow. Second operand 5 states and 119 transitions. [2024-01-31 16:46:02,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 103 transitions, 615 flow [2024-01-31 16:46:02,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 103 transitions, 615 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 16:46:02,225 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 216 flow [2024-01-31 16:46:02,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=216, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2024-01-31 16:46:02,226 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 7 predicate places. [2024-01-31 16:46:02,226 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 216 flow [2024-01-31 16:46:02,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:02,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:02,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:02,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:46:02,227 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:46:02,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:02,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1597391429, now seen corresponding path program 2 times [2024-01-31 16:46:02,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:02,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690529994] [2024-01-31 16:46:02,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:02,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:02,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:02,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:02,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:02,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690529994] [2024-01-31 16:46:02,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690529994] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:02,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:02,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:46:02,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408085436] [2024-01-31 16:46:02,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:02,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:46:02,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:02,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:46:02,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:46:02,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-01-31 16:46:02,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 216 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:02,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:02,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-01-31 16:46:02,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:02,614 INFO L124 PetriNetUnfolderBase]: 2111/2831 cut-off events. [2024-01-31 16:46:02,614 INFO L125 PetriNetUnfolderBase]: For 4771/4771 co-relation queries the response was YES. [2024-01-31 16:46:02,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10429 conditions, 2831 events. 2111/2831 cut-off events. For 4771/4771 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 11723 event pairs, 435 based on Foata normal form. 104/2923 useless extension candidates. Maximal degree in co-relation 5299. Up to 1605 conditions per place. [2024-01-31 16:46:02,635 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 90 selfloop transitions, 10 changer transitions 0/105 dead transitions. [2024-01-31 16:46:02,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 105 transitions, 677 flow [2024-01-31 16:46:02,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:46:02,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:46:02,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-01-31 16:46:02,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6914285714285714 [2024-01-31 16:46:02,636 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 216 flow. Second operand 5 states and 121 transitions. [2024-01-31 16:46:02,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 105 transitions, 677 flow [2024-01-31 16:46:02,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 105 transitions, 677 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 16:46:02,657 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 270 flow [2024-01-31 16:46:02,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=270, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2024-01-31 16:46:02,659 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 13 predicate places. [2024-01-31 16:46:02,659 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 270 flow [2024-01-31 16:46:02,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:02,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:02,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:02,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:46:02,660 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:46:02,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:02,661 INFO L85 PathProgramCache]: Analyzing trace with hash -883981246, now seen corresponding path program 1 times [2024-01-31 16:46:02,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:02,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612293918] [2024-01-31 16:46:02,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:02,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:02,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:02,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:02,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612293918] [2024-01-31 16:46:02,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612293918] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:02,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:02,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:46:02,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928084354] [2024-01-31 16:46:02,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:02,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:46:02,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:02,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:46:02,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:46:02,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-01-31 16:46:02,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 270 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:02,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:02,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-01-31 16:46:02,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:03,046 INFO L124 PetriNetUnfolderBase]: 2045/2752 cut-off events. [2024-01-31 16:46:03,047 INFO L125 PetriNetUnfolderBase]: For 7525/7525 co-relation queries the response was YES. [2024-01-31 16:46:03,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11166 conditions, 2752 events. 2045/2752 cut-off events. For 7525/7525 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 11527 event pairs, 165 based on Foata normal form. 66/2814 useless extension candidates. Maximal degree in co-relation 5677. Up to 1169 conditions per place. [2024-01-31 16:46:03,076 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 91 selfloop transitions, 8 changer transitions 0/104 dead transitions. [2024-01-31 16:46:03,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 104 transitions, 701 flow [2024-01-31 16:46:03,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:46:03,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:46:03,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-01-31 16:46:03,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2024-01-31 16:46:03,077 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 270 flow. Second operand 5 states and 120 transitions. [2024-01-31 16:46:03,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 104 transitions, 701 flow [2024-01-31 16:46:03,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 104 transitions, 692 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-01-31 16:46:03,090 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 275 flow [2024-01-31 16:46:03,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=275, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-01-31 16:46:03,094 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 17 predicate places. [2024-01-31 16:46:03,094 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 275 flow [2024-01-31 16:46:03,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:03,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:03,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:03,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:46:03,094 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:46:03,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:03,095 INFO L85 PathProgramCache]: Analyzing trace with hash -359156568, now seen corresponding path program 1 times [2024-01-31 16:46:03,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:03,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050974123] [2024-01-31 16:46:03,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:03,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:03,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:03,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:03,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050974123] [2024-01-31 16:46:03,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050974123] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:03,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:03,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:46:03,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523505984] [2024-01-31 16:46:03,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:03,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:46:03,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:03,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:46:03,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:46:03,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-01-31 16:46:03,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 275 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:03,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:03,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-01-31 16:46:03,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:03,425 INFO L124 PetriNetUnfolderBase]: 2003/2728 cut-off events. [2024-01-31 16:46:03,426 INFO L125 PetriNetUnfolderBase]: For 8510/8516 co-relation queries the response was YES. [2024-01-31 16:46:03,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11350 conditions, 2728 events. 2003/2728 cut-off events. For 8510/8516 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 11099 event pairs, 75 based on Foata normal form. 43/2751 useless extension candidates. Maximal degree in co-relation 5727. Up to 1137 conditions per place. [2024-01-31 16:46:03,450 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 104 selfloop transitions, 10 changer transitions 0/119 dead transitions. [2024-01-31 16:46:03,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 119 transitions, 937 flow [2024-01-31 16:46:03,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:46:03,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:46:03,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-01-31 16:46:03,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6685714285714286 [2024-01-31 16:46:03,451 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 275 flow. Second operand 5 states and 117 transitions. [2024-01-31 16:46:03,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 119 transitions, 937 flow [2024-01-31 16:46:03,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 119 transitions, 912 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-01-31 16:46:03,459 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 329 flow [2024-01-31 16:46:03,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=329, PETRI_PLACES=60, PETRI_TRANSITIONS=53} [2024-01-31 16:46:03,459 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 21 predicate places. [2024-01-31 16:46:03,459 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 329 flow [2024-01-31 16:46:03,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:03,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:03,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:03,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 16:46:03,460 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:46:03,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:03,460 INFO L85 PathProgramCache]: Analyzing trace with hash -505749815, now seen corresponding path program 2 times [2024-01-31 16:46:03,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:03,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123457345] [2024-01-31 16:46:03,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:03,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:03,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:03,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:03,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123457345] [2024-01-31 16:46:03,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123457345] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:03,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:03,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:46:03,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091546159] [2024-01-31 16:46:03,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:03,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:46:03,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:03,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:46:03,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:46:03,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-01-31 16:46:03,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 329 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:03,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:03,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-01-31 16:46:03,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:03,901 INFO L124 PetriNetUnfolderBase]: 1801/2440 cut-off events. [2024-01-31 16:46:03,902 INFO L125 PetriNetUnfolderBase]: For 7814/7820 co-relation queries the response was YES. [2024-01-31 16:46:03,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10810 conditions, 2440 events. 1801/2440 cut-off events. For 7814/7820 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 9481 event pairs, 99 based on Foata normal form. 39/2459 useless extension candidates. Maximal degree in co-relation 6696. Up to 987 conditions per place. [2024-01-31 16:46:03,928 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 98 selfloop transitions, 9 changer transitions 4/116 dead transitions. [2024-01-31 16:46:03,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 116 transitions, 917 flow [2024-01-31 16:46:03,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:46:03,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:46:03,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-01-31 16:46:03,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6628571428571428 [2024-01-31 16:46:03,931 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 329 flow. Second operand 5 states and 116 transitions. [2024-01-31 16:46:03,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 116 transitions, 917 flow [2024-01-31 16:46:03,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 116 transitions, 904 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-01-31 16:46:03,946 INFO L231 Difference]: Finished difference. Result has 64 places, 52 transitions, 329 flow [2024-01-31 16:46:03,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=329, PETRI_PLACES=64, PETRI_TRANSITIONS=52} [2024-01-31 16:46:03,948 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 25 predicate places. [2024-01-31 16:46:03,948 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 52 transitions, 329 flow [2024-01-31 16:46:03,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:03,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:03,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:03,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 16:46:03,949 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:46:03,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:03,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1770117446, now seen corresponding path program 2 times [2024-01-31 16:46:03,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:03,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009540805] [2024-01-31 16:46:03,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:03,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:03,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:04,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:04,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:04,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009540805] [2024-01-31 16:46:04,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009540805] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:46:04,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863355544] [2024-01-31 16:46:04,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 16:46:04,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:46:04,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:46:04,059 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:46:04,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-31 16:46:04,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 16:46:04,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:46:04,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-31 16:46:04,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:46:04,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:04,377 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:46:04,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:04,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863355544] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:46:04,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:46:04,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-01-31 16:46:04,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009087064] [2024-01-31 16:46:04,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:46:04,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:46:04,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:04,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:46:04,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:46:04,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-01-31 16:46:04,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 52 transitions, 329 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:04,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:04,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-01-31 16:46:04,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:04,795 INFO L124 PetriNetUnfolderBase]: 1725/2376 cut-off events. [2024-01-31 16:46:04,796 INFO L125 PetriNetUnfolderBase]: For 8083/8089 co-relation queries the response was YES. [2024-01-31 16:46:04,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10854 conditions, 2376 events. 1725/2376 cut-off events. For 8083/8089 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 9815 event pairs, 293 based on Foata normal form. 77/2433 useless extension candidates. Maximal degree in co-relation 6831. Up to 1307 conditions per place. [2024-01-31 16:46:04,815 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 101 selfloop transitions, 8 changer transitions 0/114 dead transitions. [2024-01-31 16:46:04,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 114 transitions, 929 flow [2024-01-31 16:46:04,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:46:04,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:46:04,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-01-31 16:46:04,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6457142857142857 [2024-01-31 16:46:04,817 INFO L175 Difference]: Start difference. First operand has 64 places, 52 transitions, 329 flow. Second operand 5 states and 113 transitions. [2024-01-31 16:46:04,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 114 transitions, 929 flow [2024-01-31 16:46:04,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 114 transitions, 920 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-31 16:46:04,825 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 370 flow [2024-01-31 16:46:04,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=370, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2024-01-31 16:46:04,826 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 30 predicate places. [2024-01-31 16:46:04,826 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 370 flow [2024-01-31 16:46:04,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:04,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:04,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:04,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-01-31 16:46:05,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:46:05,040 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:46:05,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:05,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1778441492, now seen corresponding path program 2 times [2024-01-31 16:46:05,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:05,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007077310] [2024-01-31 16:46:05,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:05,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:05,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:05,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:05,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007077310] [2024-01-31 16:46:05,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007077310] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:46:05,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166675622] [2024-01-31 16:46:05,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 16:46:05,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:46:05,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:46:05,125 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:46:05,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-31 16:46:05,213 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 16:46:05,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:46:05,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-31 16:46:05,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:46:05,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:05,321 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:46:05,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:05,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166675622] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:46:05,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:46:05,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-01-31 16:46:05,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891542575] [2024-01-31 16:46:05,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:46:05,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:46:05,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:05,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:46:05,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:46:05,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-01-31 16:46:05,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 370 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:05,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:05,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-01-31 16:46:05,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:05,647 INFO L124 PetriNetUnfolderBase]: 1657/2291 cut-off events. [2024-01-31 16:46:05,647 INFO L125 PetriNetUnfolderBase]: For 8485/8485 co-relation queries the response was YES. [2024-01-31 16:46:05,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11190 conditions, 2291 events. 1657/2291 cut-off events. For 8485/8485 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 9706 event pairs, 481 based on Foata normal form. 68/2348 useless extension candidates. Maximal degree in co-relation 9804. Up to 1331 conditions per place. [2024-01-31 16:46:05,662 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 117 selfloop transitions, 8 changer transitions 0/130 dead transitions. [2024-01-31 16:46:05,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 130 transitions, 1118 flow [2024-01-31 16:46:05,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:46:05,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:46:05,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-01-31 16:46:05,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6685714285714286 [2024-01-31 16:46:05,663 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 370 flow. Second operand 5 states and 117 transitions. [2024-01-31 16:46:05,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 130 transitions, 1118 flow [2024-01-31 16:46:05,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 130 transitions, 1060 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-01-31 16:46:05,671 INFO L231 Difference]: Finished difference. Result has 73 places, 58 transitions, 407 flow [2024-01-31 16:46:05,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=407, PETRI_PLACES=73, PETRI_TRANSITIONS=58} [2024-01-31 16:46:05,673 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 34 predicate places. [2024-01-31 16:46:05,673 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 58 transitions, 407 flow [2024-01-31 16:46:05,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:46:05,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:05,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:46:05,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-01-31 16:46:05,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-01-31 16:46:05,885 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:46:05,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:05,886 INFO L85 PathProgramCache]: Analyzing trace with hash 992173959, now seen corresponding path program 1 times [2024-01-31 16:46:05,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:05,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523740486] [2024-01-31 16:46:05,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:05,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:05,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:06,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:06,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:06,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523740486] [2024-01-31 16:46:06,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523740486] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:46:06,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031047761] [2024-01-31 16:46:06,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:06,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:46:06,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:46:06,402 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:46:06,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-31 16:46:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:06,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 9 conjunts are in the unsatisfiable core [2024-01-31 16:46:06,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:47:34,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:47:34,309 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:47:40,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:47:40,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031047761] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:47:40,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:47:40,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-01-31 16:47:40,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652391312] [2024-01-31 16:47:40,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:47:40,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-01-31 16:47:40,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:47:40,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-01-31 16:47:40,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=167, Unknown=4, NotChecked=0, Total=240 [2024-01-31 16:47:40,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-01-31 16:47:40,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 58 transitions, 407 flow. Second operand has 16 states, 16 states have (on average 12.8125) internal successors, (205), 16 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:47:40,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:47:40,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-01-31 16:47:40,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:47:56,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-31 16:48:02,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:48:06,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-31 16:48:08,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:48:10,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:48:14,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:48:16,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:48:21,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-31 16:48:25,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:48:26,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:48:29,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-31 16:48:31,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:48:34,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.96s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:48:43,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:48:44,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:48:48,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:48:54,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-31 16:48:58,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:49:02,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:49:05,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:49:11,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:49:15,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-31 16:49:17,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:49:19,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-31 16:49:21,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-31 16:49:23,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-31 16:49:28,056 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:49:28,145 INFO L124 PetriNetUnfolderBase]: 3569/4973 cut-off events. [2024-01-31 16:49:28,145 INFO L125 PetriNetUnfolderBase]: For 16778/16778 co-relation queries the response was YES. [2024-01-31 16:49:28,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25058 conditions, 4973 events. 3569/4973 cut-off events. For 16778/16778 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 24049 event pairs, 195 based on Foata normal form. 25/4987 useless extension candidates. Maximal degree in co-relation 23018. Up to 2619 conditions per place. [2024-01-31 16:49:28,178 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 242 selfloop transitions, 100 changer transitions 18/365 dead transitions. [2024-01-31 16:49:28,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 365 transitions, 2900 flow [2024-01-31 16:49:28,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-01-31 16:49:28,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-01-31 16:49:28,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 406 transitions. [2024-01-31 16:49:28,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.725 [2024-01-31 16:49:28,180 INFO L175 Difference]: Start difference. First operand has 73 places, 58 transitions, 407 flow. Second operand 16 states and 406 transitions. [2024-01-31 16:49:28,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 365 transitions, 2900 flow [2024-01-31 16:49:28,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 365 transitions, 2879 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-01-31 16:49:28,197 INFO L231 Difference]: Finished difference. Result has 97 places, 156 transitions, 1624 flow [2024-01-31 16:49:28,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1624, PETRI_PLACES=97, PETRI_TRANSITIONS=156} [2024-01-31 16:49:28,198 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 58 predicate places. [2024-01-31 16:49:28,198 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 156 transitions, 1624 flow [2024-01-31 16:49:28,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.8125) internal successors, (205), 16 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:49:28,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:49:28,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:49:28,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-01-31 16:49:28,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:49:28,410 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:49:28,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:49:28,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1772841947, now seen corresponding path program 1 times [2024-01-31 16:49:28,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:49:28,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92093586] [2024-01-31 16:49:28,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:49:28,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:49:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:49:28,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:49:28,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:49:28,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92093586] [2024-01-31 16:49:28,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92093586] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:49:28,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715989803] [2024-01-31 16:49:28,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:49:28,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:49:28,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:49:28,727 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:49:28,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-31 16:49:28,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:49:28,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 9 conjunts are in the unsatisfiable core [2024-01-31 16:49:28,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:49:54,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:49:54,815 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:49:55,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:49:55,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715989803] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:49:55,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:49:55,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-01-31 16:49:55,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538848623] [2024-01-31 16:49:55,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:49:55,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-01-31 16:49:55,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:49:55,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-01-31 16:49:55,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-01-31 16:49:55,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-01-31 16:49:55,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 156 transitions, 1624 flow. Second operand has 16 states, 16 states have (on average 13.0625) internal successors, (209), 16 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:49:55,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:49:55,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-01-31 16:49:55,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:50:01,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.56s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:50:03,037 INFO L124 PetriNetUnfolderBase]: 5037/7017 cut-off events. [2024-01-31 16:50:03,037 INFO L125 PetriNetUnfolderBase]: For 36041/36041 co-relation queries the response was YES. [2024-01-31 16:50:03,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39910 conditions, 7017 events. 5037/7017 cut-off events. For 36041/36041 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 35500 event pairs, 487 based on Foata normal form. 19/7025 useless extension candidates. Maximal degree in co-relation 37528. Up to 5066 conditions per place. [2024-01-31 16:50:03,082 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 306 selfloop transitions, 100 changer transitions 28/439 dead transitions. [2024-01-31 16:50:03,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 439 transitions, 4421 flow [2024-01-31 16:50:03,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-01-31 16:50:03,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-01-31 16:50:03,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 382 transitions. [2024-01-31 16:50:03,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6821428571428572 [2024-01-31 16:50:03,084 INFO L175 Difference]: Start difference. First operand has 97 places, 156 transitions, 1624 flow. Second operand 16 states and 382 transitions. [2024-01-31 16:50:03,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 439 transitions, 4421 flow [2024-01-31 16:50:03,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 439 transitions, 4164 flow, removed 126 selfloop flow, removed 1 redundant places. [2024-01-31 16:50:03,162 INFO L231 Difference]: Finished difference. Result has 121 places, 254 transitions, 2756 flow [2024-01-31 16:50:03,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1367, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2756, PETRI_PLACES=121, PETRI_TRANSITIONS=254} [2024-01-31 16:50:03,163 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 82 predicate places. [2024-01-31 16:50:03,164 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 254 transitions, 2756 flow [2024-01-31 16:50:03,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.0625) internal successors, (209), 16 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:03,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:50:03,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:50:03,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-01-31 16:50:03,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:50:03,377 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:50:03,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:50:03,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1692635611, now seen corresponding path program 2 times [2024-01-31 16:50:03,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:50:03,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357771766] [2024-01-31 16:50:03,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:50:03,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:50:03,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:50:03,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:50:03,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:50:03,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357771766] [2024-01-31 16:50:03,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357771766] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:50:03,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596900870] [2024-01-31 16:50:03,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 16:50:03,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:50:03,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:50:03,737 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:50:03,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-01-31 16:50:03,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 16:50:03,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:50:03,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 9 conjunts are in the unsatisfiable core [2024-01-31 16:50:03,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:51:36,809 WARN L293 SmtUtils]: Spent 12.15s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-31 16:52:19,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:52:19,225 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:53:10,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:53:10,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596900870] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:53:10,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:53:10,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-01-31 16:53:10,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070355095] [2024-01-31 16:53:10,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:53:10,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-01-31 16:53:10,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:53:10,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-01-31 16:53:10,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=157, Unknown=27, NotChecked=0, Total=240 [2024-01-31 16:53:10,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-01-31 16:53:10,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 254 transitions, 2756 flow. Second operand has 16 states, 16 states have (on average 13.0625) internal successors, (209), 16 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:53:10,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:53:10,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-01-31 16:53:10,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:53:15,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:53:19,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:53:37,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-31 16:53:41,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-31 16:53:44,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.80s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:53:51,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:53:55,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:53:59,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:54:04,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:54:20,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.66s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:54:24,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:54:28,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:54:32,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.21s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:54:41,432 WARN L293 SmtUtils]: Spent 8.80s on a formula simplification. DAG size of input: 40 DAG size of output: 35 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-31 16:54:45,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:54:54,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:54:59,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-31 16:55:04,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-31 16:55:08,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-31 16:55:12,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-31 16:55:17,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:55:21,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-31 16:55:25,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-31 16:55:25,972 INFO L124 PetriNetUnfolderBase]: 6761/9500 cut-off events. [2024-01-31 16:55:25,972 INFO L125 PetriNetUnfolderBase]: For 62543/62543 co-relation queries the response was YES. [2024-01-31 16:55:25,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57288 conditions, 9500 events. 6761/9500 cut-off events. For 62543/62543 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 50904 event pairs, 511 based on Foata normal form. 32/9521 useless extension candidates. Maximal degree in co-relation 56596. Up to 6672 conditions per place. [2024-01-31 16:55:26,070 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 415 selfloop transitions, 158 changer transitions 15/593 dead transitions. [2024-01-31 16:55:26,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 593 transitions, 6744 flow [2024-01-31 16:55:26,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-01-31 16:55:26,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-01-31 16:55:26,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 393 transitions. [2024-01-31 16:55:26,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7017857142857142 [2024-01-31 16:55:26,074 INFO L175 Difference]: Start difference. First operand has 121 places, 254 transitions, 2756 flow. Second operand 16 states and 393 transitions. [2024-01-31 16:55:26,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 593 transitions, 6744 flow [2024-01-31 16:55:26,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 593 transitions, 6335 flow, removed 202 selfloop flow, removed 1 redundant places. [2024-01-31 16:55:26,234 INFO L231 Difference]: Finished difference. Result has 145 places, 385 transitions, 4676 flow [2024-01-31 16:55:26,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2419, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4676, PETRI_PLACES=145, PETRI_TRANSITIONS=385} [2024-01-31 16:55:26,235 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 106 predicate places. [2024-01-31 16:55:26,236 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 385 transitions, 4676 flow [2024-01-31 16:55:26,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.0625) internal successors, (209), 16 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:55:26,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:55:26,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:55:26,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-01-31 16:55:26,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-01-31 16:55:26,450 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:55:26,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:55:26,450 INFO L85 PathProgramCache]: Analyzing trace with hash 121156333, now seen corresponding path program 2 times [2024-01-31 16:55:26,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:55:26,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116717030] [2024-01-31 16:55:26,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:55:26,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:55:26,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:55:26,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:55:26,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:55:26,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116717030] [2024-01-31 16:55:26,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116717030] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:55:26,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378306566] [2024-01-31 16:55:26,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 16:55:26,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:55:26,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:55:26,748 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:55:26,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-01-31 16:55:26,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 16:55:26,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:55:26,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 9 conjunts are in the unsatisfiable core [2024-01-31 16:55:26,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:56:36,585 WARN L293 SmtUtils]: Spent 12.11s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-31 16:57:49,528 WARN L293 SmtUtils]: Spent 8.37s on a formula simplification that was a NOOP. DAG size: 33 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-31 16:58:28,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:58:28,092 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:59:01,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:59:01,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378306566] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:59:01,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:59:01,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 16 [2024-01-31 16:59:01,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219352029] [2024-01-31 16:59:01,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:59:01,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-01-31 16:59:01,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:59:01,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-01-31 16:59:01,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=190, Unknown=22, NotChecked=0, Total=272 [2024-01-31 16:59:01,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-01-31 16:59:01,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 385 transitions, 4676 flow. Second operand has 17 states, 17 states have (on average 12.588235294117647) internal successors, (214), 17 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:59:01,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:59:01,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-01-31 16:59:01,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:59:25,679 WARN L293 SmtUtils]: Spent 19.35s on a formula simplification. DAG size of input: 74 DAG size of output: 45 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-31 16:59:29,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-31 16:59:34,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 16:59:55,794 WARN L293 SmtUtils]: Spent 16.98s on a formula simplification. DAG size of input: 76 DAG size of output: 46 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-31 16:59:59,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:00:03,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:00:06,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.42s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:00:11,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:00:13,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:00:22,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:00:23,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:00:28,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] Killed by 15